Degeipt



(No Model.) l v N. W. VNDEGRIFT 8v F. ARMSTRONG.

PIPE GUTTER. No. 330,175. Patented Nov. 10, 1885.

UNITED STATES PATENT OrrrcE.

NATHANIEL W. VANDEGRIFT AND FRANK ARMSTRONG, OF BRIDGEPORT,

GONNEGTlOUT; SAID VANDEGRIFT ASSTGNOR TO SAID ARMSTRONG.

Pl PE-CUTTER.

SPECIFICATION forming part of Letters Patent No. 330,175, dated November 10A 1885.

Application lilcd March R, 1885. Serial No. 157,614. (No model.)

To all whom it may concern:

Be it known that we, NATHANIEL VTAN- DEGRIFT and FRANK ARMs'rRoNe, citizens of the United States, residing at Bridgeport, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Pipe-Cutters; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to certain novel and useful improvements in pipe-cutters, but more especially to that class of pipe-cutters in which cutting-disks are journaled in a frame, one j aw of which is movable, and has for its object to provide a device of this description in which the movable jaw may be operated with great ease and rapidity for the accommodation of pipes of various sizes, and at the same time the requisite pressure obtained to force the cutters against the pipe to be cut; and with these ends in view our invention consists in the details of construction and combination of elements hereinafter fully and in detail eX- plained, and then speciiically designated by the claim.

In order that those skilled in the art to which our invention appertains may fully understand its construction, we will proceed to describe the same in detail, referring by letter to the accompanying drawings, forming a part of this specification, in which- Figurel is an elevation of our device in operative position; Fig. 2, an end view of the same; Fig. 3, an end view o-f the pawl-frame, and Fig. 4- a detail section taken at the line .fr x of Fig. 1.

Similar letters denote like eral figures of the drawings.

A is a bar, bent at its outer end, so as to form the stationary jaw B, within which are jouriialed cutters a, by means of the short shafts b. These shafts are inserted in holes, which are formed by first boring a small hole entirely through the metal of the bar at the desired point, and then counterboring concentric with the first hole to a size capable of holding the shafts, and extending almost through the bar. The short shafts are held in position parts in the sevby means of a cap-plate, C, which fits into a tegral therewith, are projections e,within convenient reach of the operator, and used for lifting the pawl out of engagement with the rack against the resiliency of its spring. The

upper portion, G, of the pawl-frame forms anut, in which runs the threaded portion of rod H.

I is ablock sliding upon bar A forward of the pawl-frame, and to this block the forward end of the rod H is swiveled, as is clearly shown at J, Fig. l.

K is a cutting-disk similar to those in the jaw B, and journaled in like manner, its shaft being retained in place by means of cap L and screw g. The rod H is extended out to a convenient length, and is provided with a handle, M.

The operation of ourimprovement is as follows: The .jaw B is hooked around the pipe or rod to be operated upon and the pawlframe moved forward. As the cutter-block is secured upon the end of rod H, said block will also be moved forward. When the desired posit-ion of the cutter against the work is attained, the pawl frame is securely held as against any backward movement by the interlocking of the springpawl with the rack. The necessary further forward movement of the cutter to effect the cutting of the work is furnished by turning the threaded rod H so as to push the cutter-block away from the pawl-frame, and consequently toward the stationary jaw. To move the cutters apart, it is only necessary for the operator to disengage the pawl from the rack against the resiliency of its spring h, and run the frame and block backward along the bar, the screw t limiting'said movement.

After the operation just described has been performed several successive times it will be IOO found necessary to Withdraw the threaded end of the rod H through its nut,- so asto move the outter-blook up close to the pawl-frame.

In adjusting and readj usting our improved 5 device but little time is consumed, and at the same time the tool possesses great strength and durability.

Having thus described our invention, what we claim as new, and desire to secure by Let- Io ters Patent, is- ,Y The combination, with the racked bar and stationary jaw having cutters journaled therein, of the movable jaw audits cutter, the frame sliding on the bar behind the movable jaw, the

rod threaded in and extending through the top of the fra-me and swiveledto the movable jaw, and the spring-actuated pawl pivoted within the frame and adapted to engage with the rack, all arranged as described, and for the Witnesses:

J. lAMoRY, WM. S. BULL. 

